145 lines
3.0 KiB
Bash
145 lines
3.0 KiB
Bash
# /usr/lib/dynamic_dns/dynamic_dns_functions.sh
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#
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# Written by Eric Paul Bishop, Janary 2008
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# Distributed under the terms of the GNU General Public License (GPL) version 2.0
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#
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# This script is (loosely) based on the one posted by exobyte in the forums here:
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# http://forum.openwrt.org/viewtopic.php?id=14040
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. /lib/functions.sh
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. /lib/functions/network.sh
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#loads all options for a given package and section
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#also, sets all_option_variables to a list of the variable names
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load_all_config_options()
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{
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pkg_name="$1"
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section_id="$2"
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ALL_OPTION_VARIABLES=""
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# this callback loads all the variables
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# in the section_id section when we do
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# config_load. We need to redefine
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# the option_cb for different sections
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# so that the active one isn't still active
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# after we're done with it. For reference
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# the $1 variable is the name of the option
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# and $2 is the name of the section
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config_cb()
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{
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if [ ."$2" = ."$section_id" ]; then
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option_cb()
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{
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ALL_OPTION_VARIABLES="$ALL_OPTION_VARIABLES $1"
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}
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else
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option_cb() { return 0; }
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fi
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}
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config_load "$pkg_name"
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for var in $ALL_OPTION_VARIABLES
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do
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config_get "$var" "$section_id" "$var"
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done
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}
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get_current_ip()
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{
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#if ip source is not defined, assume we want to get ip from wan
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if [ "$ip_source" != "interface" ] && [ "$ip_source" != "web" ] && [ "$ip_source" != "script" ]
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then
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ip_source="network"
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fi
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if [ "$ip_source" = "network" ]
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then
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if [ -z "$ip_network" ]
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then
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ip_network="wan"
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fi
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fi
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current_ip='';
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if [ "$ip_source" = "network" ]
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then
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network_get_ipaddr current_ip "$ip_network" || return
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elif [ "$ip_source" = "interface" ]
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then
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current_ip=$(ifconfig $ip_interface | grep -o 'inet addr:[0-9.]*' | grep -o "$ip_regex")
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elif [ "$ip_source" = "script" ]
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then
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# get ip from script
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current_ip=$($ip_script)
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else
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# get ip from web
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# we check each url in order in ip_url variable, and if no ips are found we use dyndns ip checker
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# ip is set to FIRST expression in page that matches the ip_regex regular expression
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for addr in $ip_url
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do
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if [ -z "$current_ip" ]
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then
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current_ip=$(echo $( wget -O - $addr 2>/dev/null) | grep -o "$ip_regex")
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fi
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done
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#here we hard-code the dyndns checkip url in case no url was specified
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if [ -z "$current_ip" ]
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then
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current_ip=$(echo $( wget -O - http://checkip.dyndns.org 2>/dev/null) | grep -o "$ip_regex")
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fi
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fi
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echo "$current_ip"
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}
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verbose_echo()
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{
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if [ "$verbose_mode" = 1 ]
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then
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echo $1
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fi
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}
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syslog_echo()
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{
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if [ "$use_syslog" = 1 ]
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then
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echo $1|logger -t ddns-scripts-$service_id
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fi
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}
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start_daemon_for_all_ddns_sections()
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{
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local event_interface="$1"
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SECTIONS=""
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config_cb()
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{
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SECTIONS="$SECTIONS $2"
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}
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config_load "ddns"
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for section in $SECTIONS
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do
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local iface
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config_get iface "$section" interface "wan"
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[ -z "$event_interface" -o "$iface" = "$event_interface" ] || continue
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/usr/lib/ddns/dynamic_dns_updater.sh $section 0 > /dev/null 2>&1 &
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done
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}
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monotonic_time()
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{
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local uptime
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read uptime < /proc/uptime
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echo "${uptime%%.*}"
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}
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